ADS Modal Dialog focus lock

The latest patch note on this component is “Modal Dialog’s focus lock now allows focus to reach elements outside the modal if they contain the data-atlas-extension attribute, such as a browser extension that renders in-browser.”

I’ve been trying to work out how we might use this to solve an issue we are having where if you integrate Intercom on a document where there is a Modal Dialog, the Intercom text input is not focusable because the Modal Dialog has a focus guard/lock.

Any insights would be welcome.